Oil-well pump.



Patented nec. 4, |900. V

` J. HonsLEv. 0| L W E L L P U M P (Application filed Aug. 19, 1898 (No Model.)

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Nrrnn STATES PATENT man.

JAMES I-IORSLEY, OF GLADE MILLS, PENNSYLVANIA, ASSIGNOR OF ONE- Y HALF TO CHARLES E. PERKINS, OF SAME PLACE.

OIL-WELL PUNIP.

SPECIFICATION forming part of Letters Patent No. 663,029, dated December 4, 1900.

Application filed AugustlQ, 1898. Serial No. 689,037. KNO model.)

T0 all whom it may concern,.-

Be itknown that I, JAMES HORSLEY, a citizen of the United States, residing at Glade Mills, in the county of Butler and State of Pennsylvania, have invented or discovered a new and useful Improvement in Oil-Well Pumps, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical section through my pump in position for work. Fig. 2 is a similar view showing the packingchamber raised. Fig. 3 is a cross-sectional view on line III III of Fig. l. Fig. tis a similar view on line IV IV.

'My invention relates to an improvement in pumps for deep wells, particularly oil-wells, and has for its object the construction of a pump so that it may be inserted in a string of tubing at any desired position and withdrawn therefrom by means of the pump-rod without the removal of the tubing. In the construction of pumps for a similar purpose heretofore the practice has been to insert in the line of tubinga section of pipe known as a working barrel, in which are located and operated the standing valve and the plungervalve necessary for the operation of the pum p, in addition to the usual standing valve at the bottom of the tubing. Such a construction while giving satisfactory results When in perfeet working order is apt to become inefficient from the wearing of the packing, and when this is the case the entire string of tubing must be withdrawn from the wellin order to get at the working barrel for pur` poses of repacking or repair and again lowered into position, entailing much loss of time, cost, and trouble. My Aimprovement is designed to obviate these difficulties and to provide a pump which shall be easy and cheap to construct, not liable to get out of order, and which shall be capable of being inserted and withdrawn from the well without disturbing the tubing. i

In general terms the pump consists of a stationary section of tubing constituting a plunger having a standing valve adapted to be removably set in a special coupling interposed in the line of tubing, with a surrounding packed tube supplied with a valve and adapted to be operated by the valve-rod.

Referring now to the drawings, 2 is the usual tubing, at the lower end of which is secured a special coupling 3, provided with an inner face 4, slightly tapered to receive the packing-rings of the lower end of t-he stationary section,and a lower more abru ptly-tapered portion 5 to prevent excessive travel of the section.

6 is the stationary plunger of the pump, provided at the bottom with an extension 7, around which are clamped the packing-rings 8, with intervening separators 9 and a lower tightening-nut 10. As thus constructed the packing will make a tight fit within the coupling 3 when the pump is dropped to position by reason of the slight taper fit. The upper end of the plunger G is provided with a checkvalve 1l., of the well-known ball construction, having a valve-seat and a surrounding cage with a bottom shoulder projecting beyond the plunger 6 and adapted to open to permit flow upwardly from the plunger 6, but not down wardly.

Surrounding the pipe G is a reciprocating plunger, consisting of a section of tubing l2, attached at the bottom by a coupling 13 to a section 14, constituting a packing-chamber adapted to slide with the tubing l2 up and down over the plunger 6. Within the section Mis inclosed any suitable packing substance 15, such as sponge, adapted to be compressed by a spring lli, bearing against the coupling I3, and a follower 17, resting on packing l5, thus keeping the substance compressed and providing for wear. At the lower end the packingchamber is secured to a plug 18, making a sliding fit around the plunger b' and provided with packing-rings 19. In this manner an oil-tight sliding joint is secured. At

its upper end the section of tubing is provided with a check-valve 20, similar to valve l1 and having a threaded extension 21, to ,which is secured the valve-rod-22 of the pump;

In operation the entire pump is dropped by the rod 22 to position, the packing 8 firmly wedging itself in the section 3, thus insuring the passage of oil only up through the hollow extension 7, when upon actuating the re- IOO displacement caused bylowering the plunger,y

will result in a iiow of oil upwardly and out of the top of the tubing, as in the usual way,

upon each downward motion of the plunger. The pumping action may be kept up as long as there is any oil in the well, when the pump may be lifted out bodily, the coupling 13 coming into contact with shoulder of valve ll and withdrawing the packing 8 by exerting suflicient force.

The construction of my pump is very si'in ple and economical and its operation is effective without liability to disorder or much wear, While the ease with which it may be removed from or applied to operative position will commend it to all users of this class of goods.

Having described my invention, what I claim is l. In anoil-well pump, the combination of a hollow stationary plunger provided at its lower end with a series of expansible packingrings with intervening separators and a securing-nut, such rings being adapted to be expanded by pressure of the contained iiuid and to be set in the main tubing of the Well, a check-valve at the upper end of the stationary plunger with a surrounding cage projecting outwardly beyond the stationary plun` ger, an outer inclosing section constituting a reciprocating plunger provided' with a checkvalve at its upper end mounted in a cage, an operating-rod secured to the top of the cage by which the reciprocating plunger is actuated, a coupling connecting the lower end of the reciprocating plunger with a downwardlyextending packing-chamber, such coupling embracing the stationary plunger and adapted to engage with the cage of the check-valve of the stationary plunger, and a compres'sible packing substance inclosed in the packingchamber,'substantially as set forth.

2. In an oil-'well pump, the combination of a hollow stationary plunger providedA at its lower end with a series of expansible packingrings with intervening separators and a securing-nut, such rings being adapted to be expanded by pressure of the contained fluid and to be set in the main tubing of the well,

a check-valve at the upper end of the stationary plunger with a surrounding cage projecting outwardly beyond the stationary plunger, an outer inclosing section constituting a reciprocating plunger provided with va checkvalve at its upper end mounted in a cage, an operating-rod secured to the top of the cage by which the reciprocating plunger is actuated, a coupling connecting the lower end of the reciprocating plunger with a downwardlyextending packing-chamber, such coupling embracing the stationary plunger and adapted to engage with the cage of the check-valve of the stationary plunger, and an externallytapering terminal plug at the extremity of the packing-chamber embracing the stationary plunger and provided with internal annular packing-rings, and a compressible sponge packing, a follower, and a coiled spring surrounding the stationary plunger and inclosed between the coupling and the terminal plug, substantially as set forth.

3. The combination, with a line of tubing having a coupling provided with an internal tapered seat, of a hollow stationary plunger provided at its lower end with a series of expansible packing-rings with intervening separators and a securing-nut, such rings being adapted to be expanded by pressure of the contained fluid and to be set in the internallytapered coupling, a check-valve at the top of the stationary plunger with a surrounding cage projectin g outwardly beyond the stationary plunger, an outer inclosing section constituting a reciprocating plunger provided with a check-valve at its upper en'd mounted in a cage, an operating-rod secured to the top of the cage by which the reciprocating plunger is actuated, a coupling connecting the lower end of the reciprocating plunger with a downwardly-extending packing-chamber, such coupling embracing the stationary plunger and adapted to engage with the cage of the check-valve of the stationary plunger, an externally-tapering terminal plug at the extremity of the packing-chamber embracing the stationary plunger and provided with internal annular packing-rings, and a compressible sponge packing, a follower, and a coiled spring surrounding the station ary plunger and inclosed between the coupling and the terminal plug, substantially as set forth.

In testimony whereof I have hereunto set my hand.

JAMES HORSLEY. Witnesses:

PETER J. EDWARDS, C. M. CLARKE.

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